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Патент USA US3075380

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Jan. 29, 1963
|_. w. KINGS
3,075,370
UNIVERSAL JOINTS
Filed Jan. 16, 1961
~
2 Sheets-Sheet 1
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Q [EON/L90 Wan/2m K/ms
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A TTOPIVEYS
Jan. 29, 1963
L. w. KINGS
3,075,370
UNIVERSAL JOINTS
Filed Jan. 16, 1961
2 Sheets-Sheet 2
FIG 3
23
24
22
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—"'
T ‘ET
25
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FIG 4 27
29
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26
30
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United States Patent C Mice
It
3,075,370
UNIVERSAL JDINTS
Patented Jan. 29, 1963
2
Preferably, as shown in FIGURE 2, the seal comprises
an annular rib 18 with a convex surface spaced a short
distance from the end of the member and a sharp-edged
annular lip 19 which acts as a scraper and prevents the
passage into the housing of grit or other foreign matter
on the exposed surface of the cup member 10.
British company
Filed Jan. 16, 1961, Ser. No. 33,103
A port 26 for the introduction of lubricant into the
9 Claims. (Cl. 64—32)
housing is formed in the member 14.
The peripheral edge of the open end of the member
This invention relates to improvements in universal
be reinforced by an external rib 21.
joints such as are used for drivably coupling shafts of 10 v14Inmay
an alternative construction shown in FIGURE 3,
which the axes intersect but of which the alignment may
in which the relatively resilient member 22 ?ts within the
vary.
rigid member 23, the resilient member has a sealing lip
It is usual practice, particularly in vehicle transmission,
or rib ‘24 on its outer surface which engages with the
to enclose a universal joint in a spherical protective hous
inner surface of the rigid member. In that case an ex
ing, but such housings generally incorporate complicated 15 panding
garter spring 25 may be ?tted within the resilient
and expensive spherical components and oil seals or wiper
member to improve the ef?ciency of the seal. This ar
seals, depending on whether or not the housing is ?lled
rangement has the advantage that the seal is protected
Leonard William Kings, Leamington Spa, England, as
signor to Girling Limited, Birmingham, England, a
with oil. In some cases, a universal joint which is not oil
against damage by ?ying stones and the like, and the
immersed is enclosed by a ?exible rubber or like bellows,
resilient member itself is protected by the rigid member.
but where the joint is part of the drive to a front wheel of 20
“In a modi?cation shown in FIGURE 4 the rigid mem
a vehicle, the bellows must be large and cumbersome to
ber 26 may be formed by two concentric part-spherical
accommodate the necessary movement, and rubber bellows
shells 27, 28 with a narrow space between them into which
are liable to fatigue failures.
the resilient member 29 ?ts. In that arrangement there
According to our invention, a housing for a universal
25 may be a ?ne or narrow lip seal 30 between the resilient
joint comprises two co-operating part-spherical cup mem
member and the inner shell, and a relatively wide seal
31 between it and the outer shell.
I claim:
1. A housing for a universal joint for drivably coupling
of the member, being provided on one member for en
two
shafts of which the axes intersect, comprising a rigid
gagement with the inner or outer surface of the other 30 substantially hemi-spherical hollow member and a resilient
member to exclude foreign matter and to retain lubricant
member having the form of approximately three-quarters
if required.
of a hollow sphere of an internal diameter substantially
The outer ends of the members are secured in any con
canal to the external diameter of said rigid member which
venient manner to the two elements of the joints.
?ts within said resilient member, said resilient member
The relatively rigid member of the housing may be
having at its open end two spaced internal annular sealing
formed of metal or of a plastic such as nylon, while the
ribs adapted to engage the outer surface of said rigid
relatively resilient member may be formed of rubber or of
member.
a plastic having similar physical characteristics to allow
2. A housing for a universal joint for drivably coupling
bers of which one is formed of a relatively rigid material
and the other is formed of a relatively resilient material,
a lip or equivalent seal, which may be an integral part
it to be ?tted over or inserted into the rigid member.
two shafts of which the axes intersect said housing com
One form of housing in accordance with our invention 40 prising interengaging ?rst and second part-spherical open
for a universal joint is illustrated by way of example in
ended shell-like members having a common centre, said
the accompanying drawings in which:
second member ?tting over and partially enclosing said
FIGURE 1 is a side elevation of the housing;
?rst member and having an internal radius of curvature
FIGURE 2 is a fragmentary section on a larger scale
substantially equal to the external radius of curvature of
of the seal between the two parts of the housing;
45 said ?rst member, whereby said members can perform
FIGURE 3 is a vertical cross-sectional view of a modi
relative angular sliding movements about said common
?ed housing; and
centre, said second member having an open end of smaller
FIGURE 4 is a vertical cross-sectional View of yet an
diameter than the greatest diameter of said ?rst member,
other modi?ed housing.
and each of said members having an unbroken periphery
In the housing illustrated, one part comprises a part 50 and at least said second member being adapted at its end
spherical cup member 1% formed of metal or of a plastic
such as nylon, and having an integral axially extending
sleeve part 11 which ?ts over a shaft element 12 of the
remote from its open end, to engage its associated shaft
and at least one of said ?rst and second members being
made of resilient material allowing it to be deformed for
universal joint and is secured in position by a worm-drive
assembly together of said members.
clip 13. If the member is made of metal, the sleeve part 55
3. A housing for a universal joint for drivably coupling
11 may be split to allow it to be contracted on to the
shaft. The cup member ill may conveniently have the
form of approximately half a sphere.
The other member 14 is moulded from rubber or a
two shafts of which the axes intersect, said housing com
prising interengaging ?rst and second part-spherical open
ended shell-like members having a common centre, said
second member ?tting over and partially enclosing said
plastic having similar physical characteristics and has the 60 ?rst‘member and having an internal radius of curvature
form of approximately three-quarters of a sphere. This
substantially equal to the external diameter of said ?rst
member has an integral axially extending sleeve part 15
member whereby said members can perform relative angu
lar sliding movements about said common centre, said
joint and the member may be strengthened or stiffened by
second member having an open end that is normally of
external ribs 17. The internal radius of the member 14 65 smaller diameter than the greatest diameter of said ?rst
is substantially equal to the external diameter of the cup
member and each of said members having an unbroken
periphery, at least said second member being adapted to
member 10 and the material of which the member 14 is
engage its associated shaft at its end remote from its open
made is suf?ciently resilient to allow its open end to be
' end, and said second member being made of resilient
stretched to ?t it over the cup member Ill. The member
14- is formed on its inner surface around the open end 70 material such as to allow the periphery of said second
member to be stretched to pass over said first member
with a lip or the like adapted to bear on the surface of the
for assembly together of said two members.
cup member 10 to form a seal for retaining lubricant.
which ?ts over the other shaft element 15 of the universal
8,076,370
3
4. A housing as in claim 3, wherein said ?rst member
is of sheet metal.
5. A housing as in claim 3, wherein said ?rst member
is of nylon.
6. A housingas in'claim 3, wherein said second member
is of rubber.
7. A housing for a universal jointfor drivably coupling
two shafts ofwhich the axes intersect, said housing com
4%
?rst member comprising inner and outer concentric layers
de?ning between them a spherical space, and said second
member entering into the said space, whereby said mem
bers can perform relative angular sliding movements
about said common centre, said ?rst member having an
open end that is normally of smaller diameter than the
greatest diameter of the periphery of said second member,
and each of said members having an unbroken periphery,
prising interengaging ?rst and second part-spherical'open
at ‘least said ?rst member being adapted to engage its
ended shell-like members having a common centre, said 10 associated shaft at its end remote from said open end, the
second member ?tting over and partially enclosing said
space in said ?rst member having at the shaft engaging
?rst member and having an internal radius of curvature
end thereof a diameter less than the greatest diameter of
substantially equal vto the external diameter of said ?rst
the periphery of said second member, and said second
member whereby said‘members can perform relative an~
member being made ‘of resilient material such as to allow
gular sliding movements about said common centre, said 15 the periphery of said second member to'be deformed to
second member having an open'end that is normally of
pass through the opening of said ?rst member and between
smaller diameter than the greatest diameter of said ?rst
the layers of said ?rst member with the open end-of said
member and each of said members havingran .unbroken
second member extending in the direction of the shaft
periphery, at least said second member being adapted to
receiving end of the spherical space of said ?rst member
engage its associatedshaftat'its end remote from its open 20 and beyond the plane through the greatest diameter-there
end, and said ?rst member being made of resilient material
of for assembly together of said members.
such asrto allow the periphery of said ?rst member to be
References Cited in the ?le of this patent
deformed to pass intothe open end of said second mem
ber for assembly together of said two members.
UNITED STATES PATENT-S
8. A housing as in claim 7, whereinsaid ?rst member 25
includesan expanding garter spring.
I
9. A housing for a universal joint for drivably coupling
two shafts of which the axes intersect, said housing com
prising interengaging ?rst and second part-spherical ‘open
ended shell-like members having a common centre with 30
the open ends of each of said members having .a diame
ter less than the greatest diameters of said members, said
1,665,734
1,902,976
2,008,830
Clark _______________ __ Apr. 10, 1928
Spicer et al ___________ __ Mar. 28, 1933
Johnson _________ __‘_____ July 23, 1935
‘2,079,622
2,847,837
2,929,232
2,944,442
La Rose _____________ .._ ~May
Baker ______________ __ Aug.
Muller ______________ -._ Mar.
,Muegel et al ___________ .._ July
11, 1937
19, 1958
22, 1960
12,1960
2.960.850
Crawford ___________ __ Nov. .22. 1960
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